. ♪ dave brubeck. and we know there are people and videos that capture your imagination every day, so, tweet me your thoughts for the "instant index," @dianesawyer. >>> and, coming up right now, we have a test for you. is this the queen of england? >> my dear, thank you so much. >> or, is this the queen of england? >> thank you for inviting me. >> do you know which one is the imposter? stay tuned. made a commitment to the gulf. bp has paid over twenty-three billion dollars to help those affected and to cover cleanup costs. today, the beaches and gulf are open, and many areas are reporting their best tourism seasons in years. and bp's also committed to america. we support nearly 250,000 jobs and invest more here than anywhere else. we're working to fuel america for generations to come. our commitment has never been stronger. a regular guy with an irregular heartbeat. the usual, bob? not today. [ male announcer ] bob has afib: atrial fibrillation not caused by a heart valve problem, a condition that puts